From 54b998173b128bb8362b5dbafbd66c4199776937 Mon Sep 17 00:00:00 2001
From: Oleksandr Byelkin <sanja@mariadb.com>
Date: Thu, 23 Apr 2015 20:08:57 +0200
Subject: MDEV-7846: Server crashes in Item_subselect::fix_fields or fails with
 Thread stack overrun

Substitute into transformed subselects original left expression and than register its change in case it was substituted.
---
 sql/item_subselect.h | 1 +
 1 file changed, 1 insertion(+)

(limited to 'sql/item_subselect.h')

diff --git a/sql/item_subselect.h b/sql/item_subselect.h
index 592e7711a10..930bd665e3a 100644
--- a/sql/item_subselect.h
+++ b/sql/item_subselect.h
@@ -449,6 +449,7 @@ protected:
                                     Item **having_item);
 public:
   Item *left_expr;
+  Item *left_expr_orig;
   /* Priority of this predicate in the convert-to-semi-join-nest process. */
   int sj_convert_priority;
   /*
-- 
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